Wednesday, April 27, 2011

Is There Any Difference between 3x and 3+x? ( LiuGuoJin )

Is There Any Difference between 3x and 3+x? Of Course ! For example, 3+x is how it looks like, 3+x, but 3x is actually 3(times)x, or x+x+x. Thus, 3+x is the number 3 added to x, while 3x is x added to x, and added to x again.

A multiplication expression is adding the variable by the constant number ( for example 5x = x+x+x+x+x(5 times)), while in addition, it is adding the variable to the constant.

So, they may look similar to some, but are actually very different expressions.